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Safety fears stall U.N. bid to examine sun-blocking climate change tech
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Safety fears stall U.N. bid to examine sun-blocking climate change tech

U.N. delegates on Thursday withdrew a motion calling for more research into technologies that aim to fight climate change by reflecting the sun’s rays back into space, amid concerns about health and environmental risks. Some who opposed the draft resolution at the U.N. Environment Assembly (UNEA) were also worried that the use of solar radiation modification (SRM)...

Climate engineering: a quick fix or a risky distraction?
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Climate engineering: a quick fix or a risky distraction?

On a Tuesday in August, Luke Iseman drove two hours east of Oakland in drought-stricken California to a remote spot where he launched a handful of balloons filled with sulphur dioxide and helium high into the sky. From there, he used GPS to try to track the balloons as they rose into the stratosphere,the layer...